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An electric kettle connected to the 230 V mains supply draws a current of 10 A. Calculate : (a) the power of the kettle. (b) the energy transferred in 1 minute.

  

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An electric kettle connected to the 230 V mains supply draws a current of 10 A. Calculate :

(a) the power of the kettle.

(b) the energy transferred in 1 minute.

1 Answer
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Given, V = 230V, I = 10 amp

(a) P = VI

P = 230 x 10

P = 230 watt = 2300 J/s

(b) Energy consumed in minute = P x t

= 2300 J/s x 60s 

= 138000 J

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